Valve for gas-engines.



R. SCHMITZ.

VALVE FOR GAS ENGINES.

APPLICATION FILE-D MAR. 6, 1911.

Patented May16,1916.

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J H H H H H U I M HI IMIJ. MN

W ITNESSES MQLA ATTORNEY THE COLUMBIA PLANDGRAPH 110.. WASHINGTON. D. C.

R. SCHMITZ.

VALVE'FOR GAS ENGINES.

APPLICATION FILED MAR. (s. 19H.

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INVEN 01? M a 7 I 7%? Ak Zizflg ATTORNEY I R. SCHMITZ. 'VALVE FOR GASENGINES.

APPLICATION FILED MAR. 6| I911.

1,183,773. Patented Maylfi, 1916.

4 SHEETS-SHEET 3.

INVENTOR W 51:5.- M/ZZL I I A TTORNE Y THE CDLUMBIA PLA NOGRAPH 110.,WASHXNGTON, P C.

R. SCHMITZ.

VALVE FOR GAS ENGINE-S. APPLICATION FILED MAR. 6. m1.-

1,183,773. Patnted May16,1916.

4 SHEETSSHEET 4.

MINI a WITNESSES THB COLUMBIA PLANOGRAPH C04. WASHINGTON, n. c.

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UNITED STATE PATENTOFFICE- R CHAR scmyrrrz, or

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Ap i a o laments s r a ir 812.5

To all whom itmay concern: p

' Be it lgnow n that I, RrcnARD SCHMHZ, a citizen of the U ted States,residinghin Chicago, county of Cook, and State ofllli nois, haveinvented a certain new and use; ful Improvement in Valves forGas-.Engmes, of which the following is a specification. My inventionrelates to that classof en gines in which the valv i rotated instead ofelevated by camsorother similar. devices,- and has for its object togreatly simplify'the construction of an engine. w

My means of accomplishing. th iforegoing. object may be more readily'understoodby having reference to. the accompanying. d awings, which arehereunto annexed and are; a,

part of this specification, in; whi h:

Figure 1 is a side elevation of an; engine utilizing my improvedvalve.Fig. 2. i s-an end view partly in section, Fig. 3,is,a cross section onthe line a: a; in. Fig. l. Fig, 4 is a detail, showing. the, valve.propen Fig. 5 is a detailed view, showing a modified form of; the.valve. Fig. 6'is;a vertical, sectional view, showing the. interior'ofthecylinders, and the location of: the valve-shaft- Figs. 7 and 8 show,modifiedforms of. valves being shown in cross section, 1Similarreference numerals refer to s1 m1- lar. parts. throughout theentire description. As. shown in the drawings, ,1 indicates thecylinders, having pistons. 25:0perat1ng therein. r 3 isa connecting rodpivotallyattachedto a piston by means of the piston p'in. 4 the:connecting. rod; extendingto. a. crank fi: Th s part ofthe rodfhasbeenomitted; as parse forms no part ofmy present IILVQIliLlOIl-f and; forthe :reason, that an'y ofthe usual devices forthis purpose maybe used;On-thecrank 5 adjacent the arm G thereof; I; mount a bevel gear 7,which. must. beofisufficient; d1. ameter, so thatthe arm ofthe'crankvwlll. clear the inner edge of the teeth of the said; This. gearisin mesh with. aqgear 8, which. is fixedly mounted upon. ashaft; 9, whichissuita'bly secured; in. a side wal1: 1 0, of. the crank case, a.fragmentary portlon. of; thelatter. only b'einggshown. The outer. end ofthis shaft 9 hasa sprocket ll mountr. ed: thereon, which carriesachain112which. extends]. to. a. sprocket; 28, which is. mounted:- on andrigidly secured to the end of the valve shaft: 13. This. shaft;v isImounted and rotates. in journalabearings Hand: 15,1and:

extends between the. cylinders fromjone side i toll the other.Considerable difliculty has been experienced in the operation of rotaryvalves due to the inability to cool-thevalveshattavo his. ob ecti n. byp i anum'ber. of large spaces 16. and 18 formed by. thesleeveslti whichare. open-to the'air. and; which. t. w b o se ve compl t y: separate theshaft bearing from contact with, the cylinder walls, except at theirouter e and e e-wall -..di t y i C nt t with the water in thewater-jacket, soythat they wills not be subjectedto undue heating.

A lug or shoulder-.17 is cast or formed on; the, side walls ofthecylinders and a port or passage extends from; the. face oi thesaidlug. to theinteriorof the said cylinder. A similar-lug. is formed on theopposite wan f-the cylindersand is also provided with ports or passagesfor the inlet of the, explosive charge. Uponthe shat-13;adjacent the fae of. the, lug 17, is mounted my improved valve; 19, which is as,clearly-seen. in the detailed views, a disk, which is formed" with aboss. or hub onits central portioni In some; cases it may be. found;desirable to construct the valveidisksin theforms shown in Eigs. 7 and;8. In Fig. I provide. a raised portion 30, which joins themain disk; bya bevel W3ll3-1,-2111d. this formprovides foranairspaceBQ, and, as willbe apparent,

' one desired'tol'accomplish: extra: quick open;-

ingor closing or other variations without deviating, from the. scope of.my invention. Outsidevofr the ivalve 19 I; place a "pressure plate 20;which is secured"to the lug. 17: by bolts-21 or in. any other iconvenient i manner. The platesz-areprovided with a bearingfor thevalve'shaft; 13 and' are provided: with; openings. 22; and: 1 23, which.correspond to the; ports ".orwpassages. "extending. to the in terior ofthe cylinders. A similar forinaofr construction. is utilizedfromtheothen side oiithe cylinder except the: areal oii theflport svary: Ijhave shown the plate the exhaust side water-jacketed for thepurpose of cooling the exhaust valve. I lieve that under ordinarycircumstances it will be necessary to water-jacket the inlet valve. Whennecessary it can, of course, be

done without departing: from the spirit of myinvention. For thefpurposeof illustration I have shown a concrete fornrof rotatmg the valve shaft18, andin turn the valves proper, but I do not wish to be understood as*limiting myself to the precise form shown, as many mechanical devicesmay be used to accomplish theresult. For example, ashaft and beveledgears or a train of gears mightbeemployedmnd in fact a number ofdevices, all of'which would be capable of effecting rotation of thevalve in the desired direction.

- In Fig. 5 I have illustrated a modified form of valve, which isdesigned to effect a regulation of the speed of the engine in a moreefficientmanner than simply throttling by the movement of the valve. Inthis form, a portion of a plate 34, which corresponds in diameter to thevalve 19 is provided with' a plurality of minute perforations 35, whichincrease in size from the point atwhich they commence to the'portion oftheplate where they terminate. A plate structed that 11 the same maymove on the plate 34 "and cover a pre-determinednumber of perforations,to regulate-the gas flowing to the engine. a Practice has shown that theutilization of a plate of this character permits the regulationof thespeed of a gas engine with great nicety, and without so great a loss inefficiency as where the usual throttling means are employed.

It may be found desirable in some cases A to simply recess a piece offoraminated metal into the valve diskitself, covering the open inginstead ofhaving the separate plate 28. The operation of the device isas follows:

The rotationof the crank 5 carries with it the bevel gear7, and it, inturn, causes the bevel gear 8 to rotate, thus causing the rotation ofthe shaft 9, which carries with it the sprocket 11", and thus throughthe medium ofthe chain 12, the valve shaft 13 is rotated. The rotation"of this shaft brings the opening in the inlet valve in register withthe port or passage, leading the incoming charge to. the interior of thecylinders, the opening in the .exhaustvalve being so located withreference to the-openingin inletvalve so as to causeit tocome intoregister with the eX- haust :port or passage after the charge hasentered the cylinder and been fired.

Having described my invention, what I regard asnewhnddesire to secure byLetters Patent is Ina gasengine having a plurality of cylinders,a-transverse shaft passing between I do not bethe cylinders adjacent theexplosion chamber, there being inlet and exhaust ports on the oppositesides of said cylinders, a disk valve secured to each end of said shaft,which disks M have openings therethrough corresponding in size to theinlet and exhaust ports, each disk adapted to control the ports of thetwo cylinders and means to cause said'openings to register with the saidports at a predetermined time. I

2. In a gas engine having a plurality of cylinders a transverse shaftpassing between the cylinders adjacent the explosion chamber, therebeing inlet and exhaust ports on opposite sides of the cylinders, diskvalves fixedly secured to said shaft, having openings therein adapted toregister with the ports in the cylinders, pressure plates adapted tohold the valves to their seats and means actuated by the crank shaft torotate said shaft.

3. In a gas engine having a plurality of cylinders, a transverse shaftpassing between the cylinders adjacent the explosion chamber, therebeing inlet and exhaust ports on the opposite sides of said cylinders, adisk valve secured to each end of said shaft, which disks have openingstherethrough corresponding in size to the inlet and exhaust ports,-eachdisk being adapted to control the ports of two cylinders, means to causesaid openings to register with the said ports at a predetermined timeand pressure plates adapted to hold the valves to their seats. In a gasengine having a plurality of cylinders, a transverse shaft passingbetween the cylinders adjacent the explosion chamber, there being inletand exhaust ports on the opposite sides of said cylinders, a disk valvesecured to each end of said shaft, which disks have openingstherethrough corresponding in size to the inlet and exhaust ports, eachdisk being adapted to con trol the ports of two cylinders, means tocause said openings to register with the said ports at a predeterminedtime, pressure plates adapted to hold the valves to their seats andmeans to cool said disks.

5. In a-gas engine having a plurality of vertical cylinders, there beinginlet and exhaust ports on opposite sides of the cylinders, of ashaft'mounted intermediate two cylinders adjacent the explosion chamber,disk valves fixedly attached to said shaft having openings thereinadapted to register with the ports in the cylinders, a sprocket mountedon the said shaft, a chain on the said sprocket, a bevel gear on thecrank shaft of the engine, a bevel gearmeshing with the said gear, ashaft rotating with said latter gear and a sprocket fixedly secured tosaid shaft on whichsaid chain runs.

"6. In a gas engine having a plurality ofvertical cylinders, lugs formedon two sides of. the cylinders adjacent the explosion chamber, therebeing exhaust and inlet ports formed in the said lugs, rotary diskvalves having openings therein adapted to register with the ports,pressure plates to hold said valves in position and means actuated bythe crank shaft to rotate said valves.

7. In a gas engine having a plurality of vertical cylinders, lugs formedon two sides of the cylinders, adjacent the explosion chamber, therebeing exhaust and inlet ports formed in the said lugs, rotary diskvalves having openings therein adapted to register with the ports,pressure plates to hold said valves in position, means actuated by thecrank shaft to rotate said Valves and means to cool said disk valves.

8. A rotary disk valve for gas engines comprising vertical cylindershaving inlet and exhaust ports on opposite sides adjacent the explosionchamber, of a shaft located, intermediate the cylinders, adjacent saidports, a transverse shaft located intermediate the cylinders and shaft,a sleeve surrounding said shaft, there being a space on all sides ofsaid sleeve open to the air, means actuated by the crank shaft to rotatesaid shaft, disk valves fixedly secured to said shaft having openingstherethrough adapted to register with the exhaust and inlet ports.

9. A rotary disk valve for gas engines comprising vertical cylindershaving inlet and exhaust ports on opposite sides adjacent the explosionchamber, of a shaft located intermediate the cylinders adjacent saidports, a transverse shaft located intermediate the cylinders and shaft,a sleeve surrounding said shaft, there being a space on all sides ofsaid sleeve open to the air, means actuated by the crank shaft to rotatesaid shaft, disk valves fixedlysecured to 10. A rotary valve for gasengines comprising cylinders having inlet and exhaust ports on oppositesides adjacent the explosion chambers, a sleeve supported between thecylinders, and in spaced relation therewith, to form a cooling chamber,a shaft supported in the sleeve, a disk valve having an opening, securedto each end of the shaft, and means for rotating said shaft whereby theopenings in the valves are brought into registry with the respectiveinlet and exhaust ports.

11. A rotary disk valve for gas engines, comprising cylinders havinginletand exhaust ports on opposite sides thereof, a shaft supportedbetween the cylinders, a cooling chamber surrounding the shaft, diskshaving an opening adapted to register with the respective ports of thecylinders, mounted on each end of the shaft, said disks adapted tocontrol the ports of the cylinders and means for revolving said shaft.

In witness whereof I have signed the foregoing specification.

RIGHARD SCHMITZ.

Witnesses:

JOHN R. MARKLE, C. M. BAUMEISTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Wuhington, D. 0."

